METHOD FOR FEEDING AND DISPENSING A FOODSTUFF MIXTURE TO A LINE FOR FORMING PRODUCTS FROM THE MIXTURE

Abstract

A method for dispensing a mixture to a forming line includes using a hopper to produce individual batches that are fed to the forming line. A given amount of mixture is uploaded in succession, and the hopper is actuated so as to produce from the aforesaid given amount of mixture a maximum number of batches less than or equal to four.

Claims

1. A method for feeding and dispensing a leavened mixture to a forming line, comprising: a hopper producing the individual batches that are fed to said forming line, loading in succession into said hopper a given amount of mixture and actuating said hopper so as to produce from said given amount of mixture a maximum number of batches less than or equal to four; and feeding in sequence the produced batches to said line.

2. The method according to claim 1, further comprising loading into said hopper the entire amount of mixture produced within a tank of a kneading machine in a single cycle of said machine.

3. The method according to claim 1, further comprising loading into said hopper said given amount of mixture directly from the tank of a kneading machine.

4. The method according to claim 1, wherein said given amount of mixture is greater than or equal to 300 kg.

5. The method according to claim 1, comprising the steps of: loading the entire contents of a tank containing leavened mixture into said hopper using a tank-overturning device; moving said hopper from said overturning device to said forming line; and via said hopper, feeding said sequence of batches to said forming line.

6. The method according to claim 1, wherein said hopper comprises: a tank that is to receive said given amount of mixture; and a dispensing device mounted at the bottom of said tank and designed to regulate the flow of mixture at outlet from said tank.

7. A hopper for implementing the method according to claim 1, comprising: a tank that is to receive said given amount of mixture and has a given volume; a dispensing device mounted at the bottom of said tank and designed to regulate the flow of mixture at outlet from said tank; and means for controlling said dispensing device; wherein said dispensing device and/or said control means are configured in such a way that said mixture comes out of said tank according to a succession of individual batches of mixture, each of which has a volume of not less than 25% of said given volume of said tank.

8. The hopper according to claim 7, wherein said dispensing device consists of a pair of rotors provided with respective blades designed to interact with one another in such a way as to take from said tank an amount of mixture, corresponding to said individual batches, for each rotation of the rotors by a predetermined angular interval.

9. The hopper according to claim 8, wherein said rotors each have a plurality of blades oriented radially and arranged at the same angular distances apart from one another.

10. The hopper according to claim 8, wherein said rotors are contained in a chamber obtained at the bottom of said tank, which has a substantially ellipsoidal cross-sectional profile that adheres closely to the two rotors at their opposite sides.

11. The hopper according to claim 7, wherein said dispensing device comprises one or two shutter elements designed to regulate the flow of mixture at outlet from the hopper by varying the position assumed along its or their own sliding plane.

12. The method according to claim 2, further comprising loading into said hopper said given amount of mixture directly from the tank of a kneading machine.

13. The method according to claim 2, wherein said given amount of mixture is greater than or equal to 300 kg.

14. The method according to claim 3, wherein said given amount of mixture is greater than or equal to 300 kg.

15. The method according to claim 2, comprising the steps of: loading the entire contents of a tank containing leavened mixture into said hopper using a tank-overturning device; moving said hopper from said overturning device to said forming line; and via said hopper, feeding said sequence of batches to said forming line.

16. The method according to claim 3, comprising the steps of: loading the entire contents of a tank containing leavened mixture into said hopper using a tank-overturning device; moving said hopper from said overturning device to said forming line; and via said hopper, feeding said sequence of batches to said forming line.

17. The method according to claim 4, comprising the steps of: loading the entire contents of a tank containing leavened mixture into said hopper using a tank-overturning device; moving said hopper from said overturning device to said forming line; and via said hopper, feeding said sequence of batches to said forming line.

18. The method according to claim 2, wherein said hopper comprises: a tank that is to receive said given amount of mixture; and a dispensing device mounted at the bottom of said tank and designed to regulate the flow of mixture at outlet from said tank.

19. The method according to claim 3, wherein said hopper comprises: a tank that is to receive said given amount of mixture; and a dispensing device mounted at the bottom of said tank and designed to regulate the flow of mixture at outlet from said tank.

20. The method according to claim 4, wherein said hopper comprises: a tank that is to receive said given amount of mixture; and a dispensing device mounted at the bottom of said tank and designed to regulate the flow of mixture at outlet from said tank.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Further characteristics and advantages of the present invention will emerge clearly from the ensuing description with reference to the annexed drawings, which are provided purely by way of non-limiting example, and in which:

[0016] FIG. 1 is a schematic illustration of an embodiment of the method described herein;

[0017] FIGS. 2A-2G illustrate an embodiment of the hopper used in the method described herein, in various respective steps of its operation; and

[0018] FIGS. 3, 4, and 5 illustrate further embodiments of the hopper described herein.

DETAILED DESCRIPTION

[0019] In the ensuing description, various specific details are illustrated aimed at providing an in-depth understanding of the embodiments. The embodiments may be obtained without one or more of the specific details, or with other methods, components, or materials, etc. In other cases, known structures, materials, or operations are not shown or described in detail so that various aspects of the embodiment will not be obscured.

[0020] The references used herein are only provided for convenience and hence do not define the sphere of protection or the scope of the embodiments.

[0021] As anticipated above, the method described herein has the purpose of feeding and dispensing a foodstuff mixture to a line for forming products therefrom. The method described herein has been devised in particular for being used in lines for treatment of doughs for bakery products, in particular leavened doughs.

[0022] With reference to FIG. 1, designated by the reference 10 is a station for leavening the mixture present in which are a plurality of tanks 2 containing a mixture in which a leavening process is in progress. In the proximity of the leavening station an overturning device 20 is present that is to receive the tanks 2 individually, after the process of leavening of the mixture is completed, and to turn them over in order to unload the mixture into a hopper 30 positioned adjacent to the device 20.

[0023] The hopper 30 is mobile, for example via an overhead-travelling-crane system, between the device 20 and a station 40 for loading of the mixture onto a forming line 100. Present at the above station is a hopper 42, which is to receive the mixture from the hopper 30 and to feed it along the forming line.

[0024] The hopper 30 has the function of unloading the mixture received by the device 20 onto the hopper 42 according to a sequence of batches. In particular, it operates so that the amount of mixture received by the tanks 2 will then be fed to the hopper 42 in a limited number of batches, in particular equal to or less than four. In this connection, it should be noted that the hopper 30 has a size substantially corresponding to that of the tanks 2, which are preferably of a conventional size able to receive an amount of mixture comprised between 300 and 3000 kg. The hopper 30 operates so as to produce batches of mixture of not less than 75 kg.

[0025] In the light of what has been said above, the method described herein hence envisages the steps of: [0026] setting the hopper 30 in a position corresponding to the overturning device 20; [0027] loading the mixture contained in the tank 2 directly into the hopper 30 via the device 20; [0028] moving the hopper 30 from the device 20 to the station 40; [0029] via the hopper 30, dispensing the mixture into the hopper 42 according to a succession of batches, in a maximum number of four; and [0030] bringing the hopper 30 back into a position corresponding to the device 20 for loading the mixture of a new tank 2.

[0031] Represented in FIGS. 2A-2G is an embodiment of the hopper used in the method described herein. With reference to FIG. 2A, it comprises a tank 310 provided on the bottom with a dispensing device 410 designed to regulate the flow of mixture at outlet.

[0032] In various embodiments, as in the one illustrated, the above dispensing device is constituted by a pair of rotors 412 provided with respective blades 414 designed to interact with one another in such a way that from the tank a predetermined amount of mixture will be taken at each rotation of the rotors through a predetermined angular range.

[0033] The above rotors are sized in such a way that the amount of mixture taken at each rotation is not less than 25% of the useful volume of the tank, i.e., of the total volume of mixture that can be contained therein. In various embodiments, as in the one illustrated, the rotors in question each have a plurality of blades oriented radially and arranged at the same angular distance apart from one another. In the embodiment illustrated, the blades in question are three in number and are arranged at approximately 120 with respect to one another.

[0034] The two rotors 412 are contained in a chamber 416 having a substantially ellipsoidal cross-sectional profile that adheres closely to the two rotors at their opposite sides.

[0035] The rotation indicated above, which takes place for a predetermined angular interval, starts from a condition in which two of the blades of each rotor form, together with the other corresponding two blades of the other rotor, a closed bottom of the tank (see FIG. 2A), and terminates when two new pairs of blades of the rotors go into the above condition (see FIG. 2G). The succession of steps of FIGS. 2B-2F shows how the blades in question co-operate for taking from the tank the aforesaid predetermined amount.

[0036] As may be seen from the above figures, the action exerted on the mixture principally consists in accompanying dropping thereof by gravity, and usually in the final step of rotation a cutting action is exerted, which is in any case circumscribed to a particularly limited area of the mixture.

[0037] The fact of producing batches of mixture of relatively large dimensions, as indicated above, means that the individual batches will maintain as a whole the same structure and consistency obtained at the end of the leavening process, and that possible alterations of their structure will be circumscribed so as not to jeopardize the overall quality of the mixture.

[0038] Moreover, the use of one and the same hopper 30 for conveying the mixture unloaded from the tanks 2 to the forming line, presents the advantage on the one hand of limiting the number of handling operations to which the mixture is subjectedunlike known processes, in which the mixture may instead be subjected to a number of transfers from one conveying means to anotherand, at the same time, to maintain the mixture in a gathered condition so as to safeguard its own structure and consistency.

[0039] To return once more to FIGS. 2A-2G, it should again be noted that the amount of mixture separated by the dispensing device illustrated in these figures, for each movement of rotation of the two rotors, is a function not only of the dimensions of the two rotors, but also of their angular velocity. In this connection, the hopper described herein comprises a control unit configured for actuating the two rotors in a movement of rotation that has a predetermined profile of the speed of rotation.

[0040] FIGS. 3, 4, and 5 show further embodiments of the hopper described herein. In these embodiments, the dispensing device 410 comprises one or two shutter elements 422 designed to regulate the flow of mixture at outlet from the hopper by varying the position assumed along its or their own sliding plane. The amount of mixture dispensed by this type of device is a function of the outflow section determined by the shutter element or elements and of the time in which the element or elements remains/remain in the opening position. In various preferred embodiments, the distal edge of the above element or elements has a cutting profile 422 to facilitate separation of the amount to be dispensed from the rest of the mixture.

[0041] In the embodiment illustrated in FIG. 3, in which there is a single shutter element, this is slidably mounted along a plane inclined with respect to the vertical axis of the tank, and controls an opening on the bottom of the tank that is shifted laterally with respect to the axis of symmetry of the tank itself. In the embodiments illustrated in FIGS. 4 and 5, in which the shutter elements are instead two, these are mounted at the opposite edges of a central opening obtained on the bottom of the tank and are mobile in the same horizontal plane. The hopper of FIG. 5 is moreover characterized in that above and in the proximity of the two shutter elements, two opposed rollers 424 are provided, which face the inside of the tank and have the task of facilitating, as a result of their rotation, exit of the mixture.

[0042] Of course, without prejudice to the principle of the invention, the details of construction and the embodiments may vary, even significantly, with respect to what has been illustrated herein purely by way of non-limiting example, without thereby departing from the scope of the invention, as defined by the annexed claims.